Caliper



Jan. 7, 1941. E o. GROEE 2,227,883

CALIPER Filed March 27, 1939 2 Sheeis-Sheet 1 0 w "w y W v 4 7 9 a M 5 & z .m \\\\\\\\\\\\VWMMW NM %I I Attorneys Jan. 7, 194-1. E O GROBE 2,227,883 CALIPER Filed March 27, 1959 2 Sheets-Sheet '2 IJZJUZ 6,57 0%,

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Attorneys Patented Jan. 7, 1941 UNITED STATES PATENT OFFICE 3 Claims.

This invention appertains to new and useful improvements in calipers, the principal object being to provide a gauge for machinists, die makers, and other skilled mechanics which will be found 5 to be of high value from the standpoint of ease of operation and precision in execution.

Another important object of the invention is to provide a gauge of this character which has an unusual length which permits its use at exceptional depths.

Other objects and advantages of the invention will become apparent to the reader of the following specification.

In the drawings:

Figure 1 represents a side elevational view.

Figure 2 is a section on the line 22 of Figure 1.

Figure 3 is a section on the line 33 of Figure 1.

Figure 4 is a fragmentary detailed sectional view through the lower portion of the gauge.

Figure 5 is a sectional view on the line 55 of Figure 4.

Figure 6 is a fragmentary detailed sectional view on the line 66 of Figure 4.

Figure '7 is a fragmentary side elevational view of the stationary anvil.

Referring to the drawings wherein like numerals designate like parts, it can be seen that numeral 5 represents the gear case which has the smooth opening 6 in one side and the threaded opening I in its opposite side. The threaded opening I receives the threaded portion 8 of the hollow stationary anvil 9, the outer portion of which is closed while its inner end portion is open and provided with the smooth peripheral portion I I] which forms a bearing for the bevelled gear I I (see Figure 4).

The beveled gear II is internally threaded and receives the elongated threaded portion I2 of the movable anvil l3, the outer end portion of which is provided with a smooth periphery.

A sleeve l4 encases that portion of the movable anvil l3 located within the gear case 5, one end of this sleeve I4 being reduced as at I5 to fit in the opening 6.

The sleeve l 4 has an opening IS in the top portion thereof for receiving the lock pin l6. This lock pin extends downwardly through the barrel I! and has its lower end tapered to not only engage through the opening I6 in the sleeve I4, but also to project into the longitudinal groove I8 of the movable anvil I3.

Numeral I9 denotes the stationary barrel the lower end of which is threadedly engaged as at 20 into the upper portion of the case 5. A bearing or bushing member 2I is interposed between the lower portion of the barrel l1 and the stationary barrel l 9 and the lower end of the barrel I 1 carries the bushing 2| and the beveled gear 22. pressed into the barrel II leaving an opening in the gear to receive the lock pin I6.

The upper portion of the stationary barrel [9 has the knurled hand grip portion 23 and a knurled cap 24 at its upper end through which the rotatable barrel I! is disposed. The upper portion of the rotatable barrel I! has a knurled portion 25.

The upper end portion of the pin I6 has the knurled portion 26 and the threaded portion 21 threadedly disposed through the upper end portion of the barrel I'I.

Obviously, by rotating the barrel I"! adjustment of the movable anvil l 3 will take place without rotation thereof, and a slight rotation of the pin I6 by its'knurled end portion 26 will serve to lock the anvil against further movement.

While the foregoing specification sets forth the invention in specific terms, it is to be understood that numerous changes in the shape, size and materials may be resorted to without departing from the spirit and scope of the invention as claimed hereinafter.

Having described the invention, what is claimed as new is:

1. In a micrometer, a tubular barrel, a hollow 30 nipple extending from one end of the barrel and forming a casing, a tubular fixed anvil extending diametrically from one side of said casing and partway thereinto, a bearing sleeve fixed in said casing coaxially with said anvil in spaced relation thereto and opening onto the other side of the casing, a distance pin endwise movable into said anvil and sleeve and extending out of said other side of the casing, and means to move said pin comprising a tubular shaft rotatablymounted in said barrel to extend at one end out of the same for manipulation thereof, a beveled gear in said casing to which said shaft is operatively connected, and a second beveled gear threaded onto said pin in the space between said anvil and sleeve and confined therebetween.

2. In a micrometer, a tubular barrel, a hollow nipple extending from one end of the barrel and forming a casing, a tubular fixed anvil extending diametrically from one side of said casing and partway thereinto, a bearing sleeve fixed in said casing coaxially with said anvil in spaced relation thereto and opening onto the other side of the casing, a distance pin endwise movable in said anvil and sleeve and extending out of said other side of the casing, means to move said pin comprising a tubular shaft rotatably mounted in said barrel to extend at one endout of the same for manipulation thereof, a beveled gear in said casing to which said shaft is operatively connected, a second beveled gear threaded onto said pin in the space between said anvil and sleeve and confined therebetween, and means to lock said pin against endwise movement comprising a rod extending through said shaft and manipulative from the outer end of the shaft into and from locking relation to said pin.

3. In a micrometer, a tubular barrel, a hollow nipple extending from one end of the barrel and forming a casing, a tubular fixed anvil extending diametrically from one side of said casing and partway thereinto, a bearing sleeve fixed in said casing coaxially with said anvil in spaced relation thereto and opening onto the other side of the casing, a distance pin endwise movable in said anvil and sleeve and extending out of said other side of the casing, means to move said pin comprising a tubular shaft rotatably mounted in said barrel to extend at one end out of the same for manipulation thereof, a beveled gear in said casing to which said shaft is operatively connected, a second beveled gear threaded onto said pin in the space between said anvil and sleeve and confined therebetween, and means to lock said pin against endwise movement comprising a rod extending through said shaft and manipulative from the outer end of the shaft into and from looking relation to said pin, said pin having a groove therein and said rod having a locking end extending through said sleeve into said groove to prevent rotation of the pin and for locking engagement with the bottom of the groove.

EDWIN O. GROBE. 

